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S32101 Stainless Steel vs. C18700 Copper

S32101 stainless steel belongs to the iron alloys classification, while C18700 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S32101 stainless steel and the bottom bar is C18700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
9.0 to 9.6
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
43
Shear Strength, MPa 490
170 to 190
Tensile Strength: Ultimate (UTS), MPa 740
290 to 330
Tensile Strength: Yield (Proof), MPa 500
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Maximum Temperature: Mechanical, °C 1000
200
Melting Completion (Liquidus), °C 1420
1080
Melting Onset (Solidus), °C 1370
950
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 15
380
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
98
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
99

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 7.7
9.0
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 38
41
Embodied Water, L/kg 150
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
24 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 640
240 to 280
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 27
9.0 to 10
Strength to Weight: Bending, points 24
11 to 12
Thermal Diffusivity, mm2/s 4.0
110
Thermal Shock Resistance, points 20
10 to 12

Alloy Composition

Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 21 to 22
0
Copper (Cu), % 0.1 to 0.8
98 to 99.2
Iron (Fe), % 67.3 to 73.3
0
Lead (Pb), % 0
0.8 to 1.5
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 0.1 to 0.8
0
Nickel (Ni), % 1.4 to 1.7
0
Nitrogen (N), % 0.2 to 0.25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.5